The intro screen has a few easter eggs:
V shows the current version
S shows the stats of the current ship
H brings up the high score list
C brings up the credits
! brings up an input box into which you can type a ship class name.
N shows the next ship, in order of UNID
P and Shift-P to cycle through POVs in intro screen.
O switches POV to opponent
K kills current ship
D duplicates current ship
Shift-S Enables/Disables combat sound effects
During the credits you can use the page-up/page-down keys to advance or rewind.